ci starts bisection 2023-03-20 00:54:30.24190982 +0000 UTC m=+189553.521286926 bisecting fixing commit since 200e340f2196d7fd427a5810d06e893b932f145a building syzkaller on 1c9013acc70de325dbb554c8c40c17ed02eff33f ensuring issue is reproducible on original commit 200e340f2196d7fd427a5810d06e893b932f145a testing commit 200e340f2196d7fd427a5810d06e893b932f145a gcc compiler: Debian clang version 15.0.7, GNU ld (GNU Binutils for Debian) 2.35.2 kernel signature: 9b897cd2af7b1af4741df2cb1ee317c875397329fdde9b38ab39b8b3596f0064 run #0: crashed: INFO: rcu detected stall in corrupted run #1: crashed: INFO: rcu detected stall in corrupted run #2: crashed: INFO: rcu detected stall in corrupted run #3: crashed: INFO: rcu detected stall in corrupted run #4: crashed: INFO: rcu detected stall in corrupted run #5: crashed: INFO: rcu detected stall in corrupted run #6: crashed: INFO: rcu detected stall in sock_close run #7: crashed: INFO: rcu detected stall in do_idle run #8: crashed: INFO: rcu detected stall in do_idle run #9: crashed: INFO: rcu detected stall in seq_read_iter run #10: crashed: INFO: rcu detected stall in syscall_exit_to_user_mode run #11: crashed: INFO: rcu detected stall in sys_futex run #12: crashed: INFO: rcu detected stall in do_idle run #13: crashed: INFO: rcu detected stall in syscall_exit_to_user_mode run #14: crashed: INFO: rcu detected stall in do_idle run #15: crashed: INFO: rcu detected stall in sendmsg run #16: crashed: INFO: rcu detected stall in sys_rename run #17: crashed: INFO: rcu detected stall in stack_trace_save run #18: crashed: INFO: rcu detected stall in sys_clock_settime run #19: crashed: INFO: rcu detected stall in do_idle testing current HEAD e8d018dd0257f744ca50a729e3d042cf2ec9da65 testing commit e8d018dd0257f744ca50a729e3d042cf2ec9da65 gcc compiler: Debian clang version 15.0.7, GNU ld (GNU Binutils for Debian) 2.35.2 kernel signature: 1c5a5356cbd5b205078b55fbd47239c2ce02b85d47cbb18209901db82b532bf6 run #0: crashed: INFO: rcu detected stall in task_work_run run #1: crashed: INFO: rcu detected stall in sock_close run #2: crashed: INFO: rcu detected stall in sys_openat run #3: crashed: INFO: rcu detected stall in syscall_exit_to_user_mode run #4: crashed: INFO: rcu detected stall in sys_clock_settime run #5: crashed: INFO: rcu detected stall in sys_clock_settime run #6: crashed: INFO: rcu detected stall in ieee80211_ibss_work run #7: crashed: INFO: rcu detected stall in do_idle run #8: crashed: INFO: rcu detected stall in sock_close run #9: crashed: INFO: rcu detected stall in sys_pselect6 revisions tested: 2, total time: 35m49.920948564s (build: 24m13.646168534s, test: 10m14.282593149s) the crash still happens on HEAD commit msg: Linux 6.3-rc3 crash: INFO: rcu detected stall in sys_pselect6 rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: rcu: 1-...!: (0 ticks this GP) idle=6414/1/0x4000000000000000 softirq=7794/7794 fqs=4 rcu: (detected by 0, t=10502 jiffies, g=7377, q=233 ncpus=2) Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 5412 Comm: sshd Not tainted 6.3.0-rc3-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023 RIP: 0010:kasan_check_range+0x1b0/0x290 Code: 4c 89 d5 48 8d 5d 07 48 85 ed 48 0f 49 dd 48 83 e3 f8 48 29 dd 74 12 41 80 39 00 0f 85 a2 00 00 00 49 ff c1 48 ff cd 75 ee 5b <41> 5e 41 5f 5d c3 45 84 f6 75 61 41 f7 c6 00 ff 00 00 75 5d 41 f7 RSP: 0018:ffffc900001e0be8 EFLAGS: 00000056 RAX: 0000000000000001 RBX: 0000000000000084 RCX: ffffffff879ec5ed RDX: 0000000000000001 RSI: 0000000000000004 RDI: ffff88814a02e484 RBP: 0000000000000001 R08: dffffc0000000000 R09: ffffed1029405c91 R10: 0000000000000000 R11: dffffc0000000001 R12: ffff88814a02e400 R13: 0000000000000001 R14: ffffed1029405c91 R15: ffff88814a02e408 FS: 00007fb9f5c99800(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020001b80 CR3: 000000006e5c4000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: taprio_set_budgets+0x1dd/0x310 advance_sched+0x70b/0x9a0 __hrtimer_run_queues+0x4d8/0xa70 hrtimer_interrupt+0x36b/0x8c0 __sysvec_apic_timer_interrupt+0x13f/0x480 sysvec_apic_timer_interrupt+0x90/0xb0 asm_sysvec_apic_timer_interrupt+0x1a/0x20 RIP: 0010:__fdget+0x10f/0x1c0 Code: e8 03 42 80 3c 38 00 74 08 48 89 ef e8 3a 9e ec ff 48 8b 5d 00 48 85 db 74 4d 48 8d 7b 7c 48 89 f8 48 c1 e8 03 42 0f b6 04 38 <84> c0 0f 85 81 00 00 00 f6 43 7d 40 74 31 eb 2d 43 80 3c 3c 00 74 RSP: 0018:ffffc9000437f688 EFLAGS: 00000a07 RAX: 0000000000000000 RBX: ffff888029a76000 RCX: 0000000000000004 RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888029a7607c RBP: ffff88802a056a80 R08: dffffc0000000000 R09: ffffed100540ad29 R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff1100fb724aa R13: 0000000000000010 R14: 0000000000000004 R15: dffffc0000000000 do_select+0xbe9/0x12f0 core_sys_select+0x50c/0x680 __se_sys_pselect6+0x318/0x3b0 do_syscall_64+0x41/0xc0 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7fb9f5904d83 Code: 11 44 24 30 4c 89 4c 24 40 48 c7 44 24 48 08 00 00 00 64 8b 04 25 18 00 00 00 85 c0 75 21 4c 8d 4c 24 40 b8 0e 01 00 00 0f 05 <48> 3d 00 f0 ff ff 77 75 48 83 c4 58 5b 5d c3 66 0f 1f 44 00 00 4c RSP: 002b:00007fffdee82550 EFLAGS: 00000246 ORIG_RAX: 000000000000010e RAX: ffffffffffffffda RBX: 00000000000668a0 RCX: 00007fb9f5904d83 RDX: 000055d5b2d7e8d0 RSI: 000055d5b2d7e750 RDI: 000000000000000a RBP: 000055d5b2d7c030 R08: 00007fffdee82580 R09: 00007fffdee82590 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 R13: 0000000000000001 R14: 00007fffdee82608 R15: 00007fffdee82688 rcu: rcu_preempt kthread starved for 10494 jiffies! g7377 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=0 rcu: Unless rcu_preempt kthread gets sufficient CPU time, OOM is now expected behavior. rcu: RCU grace-period kthread stack dump: task:rcu_preempt state:R running task stack:26456 pid:16 ppid:2 flags:0x00004000 Call Trace: __schedule+0x1717/0x45f0 schedule+0xc3/0x180 schedule_timeout+0x19e/0x2d0 rcu_gp_fqs_loop+0x2c6/0x1010 rcu_gp_kthread+0xa7/0x3b0 kthread+0x232/0x2b0 ret_from_fork+0x1f/0x30 rcu: Stack dump where RCU GP kthread last ran: CPU: 0 PID: 9 Comm: kworker/u4:0 Not tainted 6.3.0-rc3-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023 Workqueue: events_unbound toggle_allocation_gate RIP: 0010:smp_call_function_many_cond+0x1dba/0x2e30 Code: b6 04 13 84 c0 75 57 41 f7 07 01 00 00 00 75 1a 41 ff c5 41 83 fd 08 48 8b 9c 24 c0 00 00 00 0f 82 22 ff ff ff e9 d4 0e 00 00 90 0f b6 04 13 84 c0 75 09 41 8b 07 a8 01 75 ef eb d3 44 89 f9 RSP: 0018:ffffc900000e75c0 EFLAGS: 00000202 RAX: 0000000000000011 RBX: 1ffff110173a854d RCX: 0000000000000000 RDX: dffffc0000000000 RSI: ffffffff898a43e0 RDI: ffffffff89d95540 RBP: ffffc900000e79c0 R08: dffffc0000000000 R09: fffffbfff1d19e19 R10: 0000000000000000 R11: dffffc0000000001 R12: ffff8880b9c3cf40 R13: 0000000000000001 R14: ffffffff8b2b08a8 R15: ffff8880b9d42a68 FS: 0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020000600 CR3: 000000000b726000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: on_each_cpu_cond_mask+0x3a/0x60 text_poke_bp_batch+0x2bf/0x950 text_poke_finish+0x1a/0x30 arch_jump_label_transform_apply+0x17/0x30 static_key_enable_cpuslocked+0xea/0x200 static_key_enable+0x15/0x20 toggle_allocation_gate+0xa7/0x1e0 process_one_work+0x797/0xe20 worker_thread+0x8c9/0xfd0 kthread+0x232/0x2b0 ret_from_fork+0x1f/0x30